\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Switching Vote From Establishment Left and Right to Populist Right, IV - RTI, Germany \label {tab:Table1rtilongswnarrow2}}
\begin{tabular}{l*{4}{c}}
\hline\hline
                &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                &\multicolumn{1}{c}{+Demographic}&\multicolumn{1}{c}{+Offshoring}&\multicolumn{1}{c}{+Skill}&\multicolumn{1}{c}{All}\\
\hline
Switching Vote  &                  &                  &                  &                  \\
RTI Index       &    0.124         &    0.209\sym{*}  &    0.207\sym{*}  &    0.269\sym{*}  \\
                &  (0.098)         &  (0.125)         &  (0.120)         &  (0.140)         \\
Female          &   -1.260\sym{***}&   -1.212\sym{***}&   -1.272\sym{***}&   -1.365\sym{***}\\
                &  (0.227)         &  (0.226)         &  (0.237)         &  (0.257)         \\
Age             &    0.003         &   -0.000         &    0.001         &    0.001         \\
                &  (0.008)         &  (0.009)         &  (0.009)         &  (0.008)         \\
Foreign born    &   -1.125\sym{**} &   -0.966\sym{*}  &   -0.948\sym{*}  &   -0.973\sym{*}  \\
                &  (0.545)         &  (0.548)         &  (0.548)         &  (0.543)         \\
High-Skilled    &   -0.715\sym{**} &   -0.695\sym{**} &   -0.727\sym{**} &   -0.734\sym{**} \\
                &  (0.328)         &  (0.327)         &  (0.325)         &  (0.317)         \\
Offshorability  &                  &   -0.331         &   -0.278         &   -0.072         \\
                &                  &  (0.270)         &  (0.277)         &  (0.322)         \\
Skill-Specificity&                  &                  &   -0.050         &   -0.056         \\
                &                  &                  &  (0.035)         &  (0.038)         \\
Task-Tech       &                  &                  &                  &    0.176         \\
                &                  &                  &                  &  (0.347)         \\
Task-Inter      &                  &                  &                  &    0.603         \\
                &                  &                  &                  &  (0.412)         \\
Income          &      Yes         &      Yes         &      Yes         &      Yes         \\
Regional controls &       No         &      Yes         &      Yes         &      Yes         \\
\hline
Observations    &     7522         &     7522         &     7522         &     7510         \\
R$^2$           &    0.068         &    0.081         &    0.084         &    0.087         \\
AIC             &  5.7e+06         &  5.6e+06         &  5.6e+06         &  5.6e+06         \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{5}{l}{\footnotesize \sym{*} \(p<0.1\), \sym{**} \(p<0.05\), \sym{***} \(p<0.01\)}\\
\end{tabular}
\end{table}
